MATLAB的GUI

% 进度条
% waitbar
h = waitbar(0, '实例');
get(h)

% 获得进度条的子对象
get(get(h, 'Children'))

ha = get(h, 'Children');

% 获得坐标轴子对象的子对象内容
get(ha, 'Children')

get(ans(1))
get(ans(2))

hrand = waitbar(0.3, '颜色')

ha1 = get(hrand, 'Children');
hac = get(ha1, 'Children');
hapa = findall(hac, 'Type', 'patch');
set(hapa, 'Facecolor', 'k')

doc waitbar

waitbar(0.5, hrand)